[PATCH v4 2/3] Support for perf to probe into SDT markers:

[Pekka Enberg]

> Technically feasible. But then we would have to parse each of the
> libraries and executables to list them. Right? I am not sure if such a
> delay is acceptable.

You could do it at 'perf list' time or even build time and cache it. And add lazy discovery to 'perf record' and friends.

> Also if a binary exists in a path thats is not covered in the default
> search, an user might believe that his binary may not have markers.
> I know the above reason is more of a user folly than a tooling issue.

Lazy discovery at 'perf record'-time from executable and DSOs should make that transparent to the user, no? I'm pretty sure it will be fast enough with content-adressed cache.

- Pekka